<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="信息描述">
        <el-tag type="info">excel模版说明</el-tag>
        <el-tag>
          <i class="el-icon-download"/>
          <!--<a :href="OSS_PATH + '/excel/%E8%AF%BE%E7%A8%8B%E5%88%86%E7%B1%BB%E5%88%97%E8%A1%A8%E6%A8%A1%E6%9D%BF.xls'">点击下载模版</a>-->
          <a href="javascript:;">点击下载模版</a>
        </el-tag>

      </el-form-item>

      <el-form-item label="选择Excel">
        <el-upload
          ref="upload"
          :auto-upload="false"
          :on-success="fileUploadSuccess"
          :on-error="fileUploadError"
          :disabled="importBtnDisabled"
          :limit="1"
          :action="BASE_API+'/eduservice/subject/addSubject'"
          name="file"
          accept="application/vnd.ms-excel">
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <el-button
            :loading="loading"
            style="margin-left: 10px;"
            size="small"
            type="success"
            @click="submitUpload">{{ fileUploadBtnText }}</el-button>
        </el-upload>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
  export default {
    name: 'save',
    data() {
      return {
        importBtnDisabled: false,
        loading: false,
        BASE_API: process.env.BASE_API,
        fileUploadBtnText: '上传到服务器'
      }
    },
    methods: {
      /**
       * 上传成功后的回调函数
       */
      fileUploadSuccess(res) {
        if (res.success) {
          this.fileUploadBtnText = '导入成功';
          this.loading = false;
          this.$message({
            type: 'success',
            message: res.message
          })
        }
      },
      /**
       * 上传失败后的回调函数
       */
      fileUploadError(res) {
        this.fileUploadBtnText = '导入失败';
        this.loading = false;
        this.$message({
          type: 'error',
          message: '导入失败'
        })
      },
      /**
       * 点击上传按钮触发的事件
       */
      submitUpload() {
        this.fileUploadBtnText = '正在上传';
        this.importBtnDisabled = true;
        this.loading = true;
        this.$refs.upload.submit();
      }
    }

  }
</script>

<style scoped>

</style>
